Gas-engine.



l.. E. SIMPSON.

GAS ENGINE.

APPLICATION FILED IuNE I5. IsIIi.y

III-IQIIIQI'I July wir.

[NVE/Wok'. Lawa: IMnao/v WITNESS.-

ATTORNEY.

UNITED STATES PATENT oEE'I'oE.

LOWE E. SIMPSON, OF CINCINNATI, OHIO, ASSIGNOR F ONE-HALF T0 ORVILLE SIMPSON, OF CINCINNATI, OHIO.'

GAS-ENGINE.

Specification of Letters Patent.

Patented Juljr 3,1917.

Application med June 15, 1916. serial No, 103,731.

To rf/t `/v/f/'l/z. 'it may concern.:

lio it known that l. Illowi-z E. SiMPsoN, :t

vitizv-n ot' the United States, residing at C01- A lvge I'lill, tincirmati, Hamilton county,

Ohio, lutvv. invented certnin n'e'w"and use-fnl' a vvrtioul svvtiou of a portion of the valve- ,eusiug in the plane ot' linv v of Figs. l and 3.

ln the dlnwingr-el, indicates thv c vliudvr of n four-cycle gais engine: l '4 2, thel rrank-hvarings of thv crunk-shaft.'

4, the crunk-pin:

7, Ithv vonnectingn'od vonnnvting tln` pis tou :nul vranlvpin:

Nga v vlindrirnl valve-casing:

hfu t'uvl inlet communicating with the interiorof the vnlvweasing: Y

l0, it pluralit\7 of ports connecting fue] inlet. S) with the interior of the valve-casing:

11,- un exhaust outlet from the valve-casing: i

I2,` :i circular series of ports placing exiaust outlet 11 in communication with the .uterior of the' valve-easing:

13, :in air inlet for the valve casing:

13, a plnruliti7 of ports leading fromairv,

niet 13 into the valve-casing; 4 14, the combustion-chamber of the engine: l5. the vlinder-head of the engine, this \'linderhvnd, in the illustration also con- .aimingr the valve-casing: 16. thv. passage lending from the. valve- :nsiugto the combustion-chrlniber of the lngrme:

17, thv water-jackf-zt of thv engineeylirv ler:

1S, a hollow sleeve-vulve litting and sliding within the vlnlve-cusing, its inner end cooperating,r with ports 12:

1S). a riremntvrvutial series ot' ports through thv wall of slevve-vzllve 1S, and ('0- operating,r with inlvt-ports l() and 13":

20. :rpistoumlve tittin,"r :unl sliding within the slvvvv-valve` its inner vnd having vnlvul'urvopvrntion with ports 19:

21. :l vnlve-opvrating: vrunkfshnft;

22. transmission mechanism` illustrated as' a slmft und bevvl gearing, connecting the crank-shaft ot' the engine with thv ,valveopvrnting shaft in such nlnnnvr that the hralvv-operntmgY shaft will makv one rota tion .to two rotations of the crunk-shaft of thv engine:

255, thc vrunk-pin of the vulve-operating vrank-slmft:

24, a link connecting thisVerlaiik-pin"V with v l1.,-11:11.11-20zn ...3, n stationary pivot:

'lnthe two pivotully connected members of :1 toggle connvvting pivot 25 with lsleevevnlre 1S: d l "i 2T, a link connecting crank-pin 23 with thv intermediate pivot 29 of toggle 26:

28. the spark-plug; and l 29. thv iutvrmvdinte pivotof the toggle 126` As thus far described the functionlng'of. thv val\'vmeml' ers and the operation of the the movi-ments of the, \'f:1lves`\\ill'show that. 1n the rom-se of these movements they adunt the fuel und un" to the .combustionchamber :1nd permit the burned gases to ex.-

haust from the. combustion-chamber at proper times. Thesev functional results :1re not original with the presentinvention but have been before accomplished 4by known mechonism. i

f The valveopernting crankshaft 21 actuntes piston-vulve through the medium of link 24, while-it actuates sleeve-valve 18 through the medium of link Q7 nud the toggle 26. Links 24 and' 27 urv independent of euch other though a first glance suggests that they constitute n hellvrunk. The general regimen ofthe valvular parts brinfrs about the results usual in gas engines of tlie four-cycle type-that 'ls to say. the inlet is r opened; the -piston moves throufglli its suc tion'stroke; fuolnnl mi' ure sucked into the. cylinder; the inlet closes: theipjistlon. makes its compressing sti-oke; the compressed mixture is ignited; the piston more *through its power stroke:l the exhaust opens; the piston moves through-its exhaust stroke; the spent gases are forced out of the engine; the exhaust closes; and so on and on.

The mechanism comprising the toggle 26 and link 27 provides asimple and economically constructed means through which the valve-operating crank-shaft may give motion to the sleeve-valve, and analysis will show thatthe valve-operating mechanism brings about the desired valvular movements in the most desirable and etlicient manner.

Proceeding with the idrawingsz-- 30, indicates an adjustable carrier for the stationary end pivot-25 of the toggle:

3l, a screw .for adjusting this carrier:

32, a handle for turning the screw:

33, the arc in which pivot 29 moves when pivot 25 is in the position indicated in full lines in Fig'. 3: and

84, the arc in which toggle-pivot 29 will vmove if pivot 25 be adjusted-to the position indicated in'dotted lines in 'Fig'. 2.

Assuming pivot 25 to be in the position indica-ted in full lines in Fig, 2, the intermediate toggleivot 29 will sweep in arcx33` and bring a out certain functional movei inlet 9 does -so through `ports 10, illustrated ment of the sleeve-valve 18 appropriate to a" given speed of engine. If, now, pivot 25 be adjusted'to the position indicated in dotted lines, the intermediate toggle-pivot 29 will move in are 34, causing pivot 29 to move farther toward und farther from the valve-casing, thus modifying the ltime of opening and closing brought about by the reciprocations of the sleeve-valve and rendering its functioning appropriate to a higher speed of the engine.

It is to be noted that carrier 30 of pivot 25 has a sliding adjustment in a right line at an angle of about forty-five degrees to the axis of the sleeve-valve :ind t at the adjustment is effected by means of a screw. Neither the adjustment of the pivot 25 by hand or in right line, or a screw as a means for effecting the adjustment, are essential to a realization of m invention.

It is tobo no in Fig. 3, that po 10 and 13"- admitting s and air tothe v Ive-l casing are arrangecfu tan ntially to the a of the Avalve-casing. This a ngementxd the ports causes the gas and ai to enter the4 motion tending valve-casing .with 'a swirling mminglig of these 'compoto enhance the nents of the combustible mxt'ure before they go to the combustion chamber.

Gas reaching the valve-casing from s' as being two. in number in a circumferential series of ports enteringthe valve-casing, while air entering thevalve-casing from air inlet 13 does so through ports 13, illustrated as being six in nuinberjin the saine circular series with the ports 10 which admit the gas to the-valve-casing. l

ing with the4 stroke of the piston, the mixture muy possitlie fire in the residual bly be ignited by gases, which would be highly undesirable,

the desire being to have no ignition untilthe mixture has been received into the cylinder and compressed by the engine piston.

In recognition of this it has been common t admit air on the suction stroke before any gas was admitted, andtliis is accomplished in a, very simple manner in the present coni struetio The admission of the gas and air to the combustion-chamber is accomplished by the leftw'ard movement of the` sleeve-valve, the ports 19in its wall coperatgas-ports 10 and the air-ports 13'. The left hand margins of the ports 10 and 13 are in the same plane, but/ports 10, for the are shorter than ports 13 for-the nir, as s 18 moves to the left-it will place ai r-.ports 13* in communicationwiththe combustion-chamber for-'some periodof time. before gas-ports 10, are laced in communication with the combustion-chamber' and that by the time theA admission to t e vcombustionechamber confipxehendsl a combustible mixture the danger of premature ignition from the residual gases 'can be over.' i

An analysis of the valves and their actuating 'mechanismwill show that an 'adjustment ofl the toggleivot tion indicated `iiifu 'line appropriate to a g en engine speed, 'toward Vits position indi- ;il'ed in dotted ine, appropriate to a higher engine speed, brings about the' retardin'g of the own in Figqt. The consequence of `thia-ari'angement'-is that as the sleeve-valve 4opening o-the intako','the retarding ofthe n closing of the intake, the advancing-of the opening of the exhausgand thovretarding of the closing of the exhaust. f

.I claim i 1. A gas-enginecomprising, a valve-casing provided with inlet and outlet casing andv havingv ports throu h its wall adapted to coperatie vvith'thef et porte-'of the valve-'casing 'andfhiiV g its'end adapted' to coperate withV theoutlet ports' of the valve-casing, a piston-valve fitted toslide within the sleeve-valve and have its emicoports through 'the sleevevalve a va vemov1ngcrank,alink connecti1 @ma with the .pigeon-i v a ve, -a stationaryi pivot, a' to operato -yvi h the .other ex cave-valve, and

t v sleeve-valve-tted to slide' within the valvethe linteri'nediate pivot of.'

outlet poia i 126, the valve-moving -to coperate with ieee' i and having ports through its wall link connectinglthe intermediate pivot of the e pin of thel valve-moving toggle with t said sta.-

crank, and means for ad'ustin tionary pivot, combined sn `tantlally asset f t 4 forth.

f members are 'in motion',

frst valve-member 3. A. gas vengine ing provided with inlet and "olitlet ports, a.

to coperate with the inlet-port of theva ve` casing and having Aits end adapted to co-y operate with the outlet-port of the valve cas# in a second re ative to the first valve-member and have its end jco erate with the port thereof;

mechanism or moving the two valvemembersgrelative'to each other and tothjvalve-f casing, and means,4opernble while the valvefor adjusting the time of the openin fand closing'of the inow and outfiow e ected by the valve-mem# bers,'c0mbined substantially as set forth.

4. A gas engine comprising, ya valve-cas'- ing prov'ded with a gas'inlet and with a .series of ports leading therefrom to the interioi' of the valve-casing and with an airiston comprising, "a `valvefoasf' y fitted to slide relhtlve" Avthe'ireto and having a portfthrou'gli it ado' ted.

valve-memben'tted to slide inlet and a series of port's leading th from to the interior of the valve-casing, on. n f

of the margins ofthe gas-inlet ports lying from the corresponding i in a different plane margin of the ni1inlet fitted to reciprocate wit and having ports through its orts, a. sleeve-valve in the valve-casing wall adapted 'toffirst open the air-ports in thevalve-casmg and ylater open the gas-ports inthe valve-y casing, and a plstonvnlve fitted to recipro- 'cute within thesleeve-valve nn'd having its end adapted to co )eiate with Vthe ports in the sleeve-valve ,an to cause the intake of gas and air to be simultaneousl closed,fcom ined substantially as set 'fort' 5. A4 gas engine comprising, a valve-casing provided with a gns-inletiand with a port leading vtherefrom to "the interior of 4the valvecasing and with an nir-inlet and' a port leading therefrom to the interior of the valvecosing, one ofthe Iiiargins of the gasinlet `port living in a different Vplane from the corresioncingmnl'gin of the air-inlet port a seeve-valve fitted to reciprocate within ythrough its Wall Iadapted toirst. open the airport in the valve-casin and later open the gnsportin the valve-casm and a pistonvnlve fitted to reciprocate wit in the sleevevafve. and having its-` end adapted to cooperate with the port inthe sleeve-valve anv to couse'the intakeof gas and ail` to be si yultzmeously closed, combined substanti lally as set forth.v

i g LOWE SIMPSON.

Witnesses 1, i

MIL'roN Sanne;` '('nacn Wlnnrmvls.`

the valve-casing and having "a portv 

